{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{3}{c}}
\hline\hline
\hline
Spanish export (growth rate)&       -0.03   &               &       -0.03   \\
                    &      (0.02)   &               &      (0.03)   \\
L.Spanish export (growth rate)&               &       -0.02   &       -0.02   \\
                    &               &      (0.03)   &      (0.03)   \\
\hline
F-statistic (p-value)&        0.20   &        0.52   &        0.37   \\
R squared           &        0.10   &        0.03   &        0.13   \\
Observations        &          18   &          17   &          17   \\
\hline\hline
\end{tabular}
}
